Tape Requirements

With this schedule you need at least nine tapes (if you want to reuse daily
tapes--not recommended), or 21 tapes (if you save weekly tapes for a month):
one for the level 0, four for the Fridays, and four or 16 daily tapes.

If you need to restore the complete file system, you need the following tapes:
the level 0, the most recent Friday tape, and all the daily tapes since the last Friday
tape (if any).